Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun achromatic_colour

1 sense of achromatic colour

Sense 1
achromatic color, achromatic colour -- (a color lacking hue; white or grey or black)
       => color, colour, coloring, colouring -- (a visual attribute of things that results from the light they emit or transmit or reflect; "a white color is made up of many different wavelengths of light")